243232144553331 has 24 divisors (see below), whose sum is σ = 359316619671360. Its totient is φ = 158480818534656.

The previous prime is 243232144553327. The next prime is 243232144553341. The reversal of 243232144553331 is 133355441232342.

243232144553331 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 3 + 21 + 44 + 553 + 3 + 31 = 666.

It is not a de Polignac number, because 243232144553331 - 2² = 243232144553327 is a prime.

It is a super-2 number, since 2×243232144553331² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243232144553341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405212710 + ... + 405812523.

It is an arithmetic number, because the mean of its divisors is an integer number (14971525819640).

Almost surely, 2^{243232144553331} is an apocalyptic number.

243232144553331 is a deficient number, since it is larger than the sum of its proper divisors (116084475118029).

243232144553331 is a wasteful number, since it uses less digits than its factorization.

243232144553331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811025995 (or 811025992 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 45.

Adding to 243232144553331 its reverse (133355441232342), we get a palindrome (376587585785673).

The spelling of 243232144553331 in words is "two hundred forty-three trillion, two hundred thirty-two billion, one hundred forty-four million, five hundred fifty-three thousand, three hundred thirty-one".